Dev tools · alternatives · 2026
24 alternatives to LeetSys
I built a free platform for practicing system design interviews!: https://leetsys.dev. The currently available problems will always be listed as free! It lets you chat with an interviewer in real time as you work through a system design problem. It also gives you detailed feedback at the end of the interview that you can use to assess your performance and see where you can improve. Please try it out and let me know what you think!
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
- 2
Learning to pass the Google interview? Master data structures, algorithms, and system design with interactive visualizations, a code playground, and AI feedback.
Sep 2026 · learningto.co · its alternatives →
- 3SD
Many platforms exist for a candidate to practice leetcode style questions. Created one to practice and discuss system design problem statements. There is no auto evaluation as high level design is subjective, but we support upvotes/downvotes and a comment section for feedback and discussion. Looking for early feedback.
2022 · workat.tech · its alternatives →
- 4
Mocked▲14Hi HN, I launched an AI tool a few months back to help with product management interviews. It's Leetcode-style prep, but you can verbally respond to questions and receive feedback. I originally started it as a side project, but it blew up on Linkedin and we're nearing 5-figure ARR. I would be grateful for some honest feedback and advice on both the growth and engineering side. I'm particularly interested in: - What's one feature you feel is glaringly missing? - How did similar educational consumer apps (7sage, Leetcode) scale beyond just ads? - Should I implement a landing page? I wanted to…
2025 · trymocked.com · its alternatives →
- 5
Hatchways 2.0▲154Make engineering interviews look more like real work
2023 · hatchways.io · its alternatives →
- 6CA
I've long had a dislike for leetcode interviews on both sides of the coin. Project-based interviews can also be challenging because it can end up filtering out folks who don't want to spend several hours building something in their free time. I met up with a friend last year -- a very senior dev -- who had taken some time off to study leetcode exercises while preparing for FAANG interviews. It struck me that one of the key measures of whether a candidate is a fit for a team is rather synthetic. CodeRev.app is a simple, lightweight tool that helps teams evaluate candidates using code reviews.…
2024 · coderev.app · its alternatives →
- 7IM
You can use it live during your interview or practice mocks interviews. It can also solve Leetcode and IQ questions on the go. Making online and telephone interviews easy peasy.
2024 · milio.ooo · its alternatives →
- 8
Master System Design Interviews Before the Real One
Jan 2026 · systemdesigntrainer.com · its alternatives →
- 9
Online coding interview platform for professionals
2021 · leetcode.com · its alternatives →
- 10
Pramp▲113Practice live coding interviews with engineers, for free
2015 · pramp.com · its alternatives →
- 11OS
2021 · getoasys.io · its alternatives →
- 12
An AI interviewer for software engineers to practice with on-demand mock system design interviews.
2025 · mockingly.ai · its alternatives →
- 13WB
Hey HN! We’re Jared, Shreyas, and Varun the creators of TechInterviewer. We’re building a product for software engineers to go through an entirely simulated systems design interview. Our AI interviewer, Steve, gives you a prompt and you talk out loud and draw on a whiteboard while Steve guides you through the interview and gives real-time feedback. Check out our demo: https://app.techinterviewer.ai Every software engineer today has to prepare for systems design interviews and have two awful options: pay hundreds of dollars for a single session with a FAANG engineer or follow…
2024 · app.techinterviewer.ai · its alternatives →
- 14
I was frustated by having to draw system design diagrams by hand when discussing it with my team mates or in an interview. So I thought "Wouldn't it be great if someone draws it for me, while I think out loud?". That is when I came up with VoiceDraw. You can just think out loud or discuss your system architecture with a friend/interviewer, the diagrams are automatically drawn along with your reasoning, open questions and tradeoffs beautifully written on to the side. Demo Video: https://youtu.be/36PgHKSuccE
Jun 2026 · voicedraw.com · its alternatives →
- 15
Crush System Design Interviews with AI Mock Practice
2024 · superinterview.ai · its alternatives →
- 16
- 17TI
Hey HN! I’m Andrew, and I built Code Coach with my good friends, Akshay and Chetan. Code Coach is an AI-powered interview coach that you talk to. It plugs right into Leetcode and turns any problem into a mock interview – it grills you the same way a real interviewer would and provides in-depth feedback on where you can improve. I built Code Coach to solve some of my own problems when practicing for technical interviews. I knew I had to practice communicating my reasoning while coding, but found it intimidating to schedule mock interviews with friends. More often than not, I ended up talking…
2024 · trycodecoach.com · its alternatives →
- 18NeuraPrep▲31
Hey HN, Check out our technical paper here: https://arxiv.org/abs/2501.15627 and the video demo: https://www.youtube.com/watch?v=Op8hyLW7Z84 I’ve been obsessed with the art of the interview since I was in college. In my career I interviewed over 100 people and was interviewed from tech companies from startups to big tech and hedge funds. I built Neuraprep because I noticed something missing — while software engineers have leetcode.com and finance folks have quantquestions.com, other engineering domains (like ML, data science, MLOps) don’t have a go-to…
2025 · neuraprep.com · its alternatives →
- 19
Master LeetCode faster with instant AI feedback and hints
2025 · its alternatives →
- 20
- 21
Howdy friends! Tell me if this is an atrociously terrible idea - I've been working on building a leetcode for clientside devs so we can practice React and Javascript interview questions in a more concise way, I call it clientside.dev I just finished a beta version of it yesterday and plan on releasing it with many more problems on Jan 1st but it's there if you wanna play with it open to any ideas / feedback however mean or nice it may be :)
2022 · vacation-call-335691.framer.app · its alternatives →
- 22
Free, Infinity, Unlimited System Design Preparation with AI
Aug 2026 · interviewdog.vercel.app · its alternatives →
- 23IM
It also create a preparation roadmap from the job description you pasted, includes quizzes and give you feedback at the end of the interview.
2024 · interviewwith.ai · its alternatives →
- 24
Also compare
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →